Hikikomori Kazoku (Family of Hikikomori) by Tameto Somei, published by Kobunsha, hardcover, with obi (sash). Price: 1800 yen First edition published August 30, 2025 ☆ Purchased on Amazon a week ago and read once. Almost new, but the cover has a slight fold in two places. It was like that when it arrived, but it's barely noticeable.